Machine for bending shafts



(No Model.) 2 sheets sheet 11.

A. G. SNYDER.

MACHINE FOR BENDING SHAFTS.

No. 309,579. Patented Dec-{'23, 1884.

N g Y.

1 (No Model.) 2 SheetsSheet 2.

A. G. SNYDER. I

MACHINE FOR BENDING SHAFTS.

Patented Dec. 23,1884.

llaiiTnn BTaTns PATENT firrrcn.

ANDREWV G. SNYDER, OF PIQUA, OH IO.

MACHINE FOR BENDING SHAFTS.

SPECIFICATION forming part'of Letters Patent No. 309,579, dated December23,1884. Application filed July 5, 1884. (No model.)

To ttZZ whom it may concern.-

Be it known that I, ANDREW G. Suriname. citizen of the United States,residing at Piqua, in the county of Miami and State of Ohio, haveinvented certain new and useful Improvements in Machines for BendingShafts, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

The object of my invention is the applioa iion to this class of machinesof automatic power-bending mechanism, whereby the operation of bendingcan be accomplished more certainly and speedily, and without theemployment of manual labor, as heretofore.

The novelty consists in the construction, arrangement, and combinationsof the parts, as will be hereinafter set forth and specifically claimed.

In the accompanying drawings, Figure 1, Sheet 1, is a side elevation ofa shaft-bending machine embodying my invention. Fig. 2, Sheet 1, is aplan view of one end of the table, showing the relative positions of theparts j ust before the bending is commenced. Fig. 3, Sheet 2, is a planview of the entire table just after the bending has been completed.

The same letters of reference are used to indicate corresponding partsin all the figures.

The construction of the table and formers, with the exceptionshereinafter pointed out, may be substantially the same as that shown anddescribed in my Reissued Patent No. 9,773, of June 21, 1881, and I willonly describe them here by saying that A is the bed of the table, B theremovable plate attached thereto, 0 the stationary center former, and Dthe endwise movable former, which is operated by the hand-screw E.

F is a strap surrounding the former D, and having attached to its endsthe angular hinged abutments G, against which the ends of the pair ofshafts H are placed, .as seen in Fig. 2. The hinged abutmcnts G, whosepivots are at a, are secured to the swinging outside or wing formers, I,as shown.

J is any power or line shaft carrying pulleys K L, from which belts M Npass-to pulleys O P upon a countershaft, Q, suitably journaled beneaththe table. The shaft Q also carries two small pinions, R S, which mesh.

respectively, with two larger pinions, T U, upon a shaft, V. Upon theouter ends of this shaft V are beveled pinions W, which mesh withbeveled pinions Y upon two vertical shaft-s, A, which, passing upthrough suitable bearings in the table, have keyed or otherwise rigidlysecured to their upper ends horizontal arms B, to the upper outer endsof which are journaled rollers G on line with and adapted to operate theswinging formers I.

D E are two foot-pedals pivoted at b, and whose bent lower ends carrysmall idler-pulleys F G in close proximity to the belts M and N,respectively. These belts M and N are normally slack and hang loose uponthe pulleys K L, so that the pulleys O) P are not revolved by them. Now,supposing a pair of shafts be placed upon the table, as seen in Fig. 2,and bent to the former O by the clamps H, operated by the right and leftscrews 1, and held down by the cross-bar J as shown in Fig. 3, theoperation of bending the tips by the power mechanism is as follows: Theoperator presses down the treadle D, which, taking up the slack of thebelt M, causes the revolution of the pulley O and shaft Q, and, throughthe medium of the pinions R, T, V, and Y, and shafts A, causes the armsB to turn toward the formers I until the rollers G, coming in contacttherewith, force them inward,and thereby bend the shafts to the positionshown in Fig. 3, at which time the treadle D is released and themovement of the parts stopped. To bring back the arms B totheirstartingpoint, the operator presses down the treadle E, which,acting upon the belt N, re verses the former motion of the shaft Q andits connections, thereby causing the arms B to be again swung out to theposition shown in Fig. 2. Of course it is understood that a large numberof formers, all fitting to the table, may be employed, and that afterthe bending operation has been completed the usual clamps are applied tolock the parts together, so that the whole may be removed from the tableto be dried or seasoned, and that after one set has been bent to theformers it is removed and a set which has been dried or seasoned isreplaced upon the table, the finished shafts removed,and new ones placedin position to be bent, thus on abling the operation of bending to becontinuous, if desired.

The next feature of my present invention consists in the power mechanismfor giving the bend to the butts of the shafts, which can be done beforeor after, or simultaneously with the bending of the tips. As beforestated, the shafts are clamped to the center former, O, are locked downby the cross-bar J and by wedges c, as in my patent before referred to.The ends of the butts rest in the abutments (I, attached to straps c,whose rear ends are suitably hooked, as-atf, to the plate B.

Beneath the straps c are coincident straps g, secured at their rear endsto the table in any suitable manner, and at their forward ends toangular abutments 71, attached to or forming part of a segment-frame, K,the essentials of which are that it should have the two segment-formers5, Figs. 1 and 3, and an operating-arm, 7',which,'when the machine is atrest, or before the bending operation is commenced, occupies theposition shown in Fig. 1. Suitably journaled beneath this end of thetable is a shaft, L, carrying at its ends, so as to clear the sides ofthe table, two arms, 7;, which, when the machine is not in operation,may rest upon a horse, M. 1

Connecting the outer ends of the arms k is a pivoted cross-piece, l,carrying at or about its middle two friction-rollers, m, which looselyembrace the arm 7', as shown in Fig. 1. Also keyed upon the shaft L is aworm-wheel, N, with which engages a worm, 0, upon a horizontal shaft,1?, carrying two loose pulleys, Q It, with clutch mechanismsS T, of anysuitble construction, to enable either pulley to be locked to the shaftat will. In this instance it is done by the sliding feathered hub U uponthe shaft 1 which is operated by any suitable lever or han.dle,V. Beltsn 0 connect the pulleys It Q, respectively, to the pulleys p upon apower or line shaft, 1'. As will be ob served, the belt 0 is crossed, sothat the pulleys R Q may have reversed revolutions. Now, from thisconstruction it will be seen that when a pair of shafts are clamped uponthe table, as before described, and are ready to be bent at their butts,the operator, by means of the lever V, locks the pulley R to the shaft1?, whereupon the arms 7; are raised, and,act-

ing upon the arm j, turn up the segment-benders i until the parts assumethe position shown by the light dotted lines in Fig. 1, at which pointthe bending of the shafts commences. The segment-benders continue toroll over until the position of parts shown by the heavy dotted lines isreached, at which time the shafts will be bent up, as indicated, and arelocked up by. means of-links or other suitable means, 8. (Indicated bydotted lines in Fig. 1.) By now unlocking the pulley It, and by lockingthe pulley Q to the shaft 1?, the motion of the arms is is reversed andthe, segmentbender brought back to its normal position. In this mannershafts can be speedily and effeetively bent without the exertion ofmanual. labor, and without danger of buckling or warping them.

Having thus fully described my invention,

I claim 1. The combination, in a shaft-bending machine, of a suitablesupporting frame or table,' a central former carried thereby, and curvedas described, arms located one at each side of said former, and eachmounted on a shaft suitably journaled, a wheel mounted on said shaft,and driving devicesgearing with said wheel to rotate the said shaft andautomatically swing said arms in the direction of the former,substantially as set forth.

' 2. The combination, in a shaft-bending machine, of a suitablesupporting frame or table, devices for securing the shafts thereon,segmental benders located at one end of said table adjacent to the buttsof said shafts, and adapted to engage the extremities of said buttportions, arms attached to said segmental benders, a shaft suitablyjournaled, an arm connected thereto and to the bender-arm, and devices9c driving said shaft to move the first-mentioned arm, substantially asand for the purpose set forth.

3. The combination, in a shaft-bending machine, of a suitable supportingframe or table,

shafts, wing-formers pivotally secured to said too abutments, armslocated one at each outer side of said wing-formers, and each mounted.011 a shaft suitably jonrnaled, a wheel mounted on said shaft, anddriving devices gearing with said wheel to revolve the shaft and swingthe arms in the direction of the wing-formers, substantially as setforth.

4-. The combination, in a shaft-bending machine, of a suitable frame ortable, a central former carried thereby, and curved as de- IIO scribed,arms B, pivoted at each side of said former, rollers O, journaled 011said arms, wingformers pivotally secured between said central former andsaid arms, and devices for auto matically moving said arms to cause saidrollers to contact with said wing-formers, sub stantially as set forth.

5. The combination, in a shaft-bending ma chine, of a suitable frame ortable, a central former carried thereby, and curved as described, an armlocated one on each side of said former and mounted on a shaft suitablyjournaled, a wheel carried by said shaft, driving devices gearing withsaid wheel to rotate the same and its shaft, for the purpose speoi- I2 5iied, and appliances for reversing the rotation of said wheel and shaft,substantially as set forth.

6. The combination, in a shaft-bending ma chine, of asuitable supportingframe or table, I 0

devices for seeurin g the shafts thereon, segmental bend ers located atone end of said table adjacent to the butts of said shafts, and strapstached to said table, and carrying the abutbent to receive theextremities of said butt ments d, adapted to receive the butt portionsportions, arms attached to said segmental of the shafts, straps locatedbeneaththe said 1 benders, a shaft suitably journaled, an arm straps e,segmental benders connected to tho connected thereto and to thebender-arm, do I said straps g, and means for moving said vices fordriving said shaft to move the seg- 1 benders to cause them to bear uponand verment-al benders, and appliances for reversing tieally bend saidshafts, substantially as set the movement of said segmental benders,subforth. a

stantially as set forth. ANDREW G. SNYDER. 1o 7. The combination, in ashaft-bending mai Witnesses:

chine, of a supporting frame or table, means WM. J. T. WVILsoN,

OTTO RICHTER.

for securing the shafts thereon, straps e, at

